| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a solenoid valve driving controller capable of maintaining the holding of a needle of a solenoid valve even if an impact is applied from the outside during the driving of the solenoid valve. <P>SOLUTION: Rated current carrying based on a rated voltage of a duty ratio of 100% during a first period fixed in advance and being sufficient for moving the needle in a driving coil 20 and electric power saving current carrying for performing the current carrying of duty ratio being smaller than the duty ratio of the rated current carrying for the driving coil 20 repeatedly during a second period fixed in advance by following the elapse of the rated current carrying are performed for the driving coil 20 of the solenoid valve from an application start time of a driving command signal Sa by turning on and off a transistor 22 by the control of a control circuit 25, and the rated current carrying and the electric power saving current carrying are repeatedly and alternately performed until the end of application of the driving command signal Sa to drive the driving coil 20. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
